ASTROSAT CZTI

Data Quality Report

Orbit 56898

Creation date: 2026-04-04T13:57:28.845919
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_083T14_9000006564_56898cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56898cztM0_level2_quad_clean.evt
Size (bytes)496,313,28090,377,280
Size473.3 MB 86.2 MB
Events in quadrant A4,946,298538,340
Events in quadrant B3,869,020648,051
Events in quadrant C3,916,220590,159
Events in quadrant D5,152,990522,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192861
B0159172
C0156281
D0195371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269103016.430053%
B62683305.264837%
C62691722.743659%
D62695138.183123%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7369 6269 700 700 9.50% 11.17%
B 7368 6268 154 154 2.09% 2.46%
C 7369 6270 142 142 1.93% 2.26%
D 7369 6270 441 441 5.98% 7.03%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 64 2341102 15227.14 613 599 153.7
A 0 250 66696 430.02 613 599 153.7
A 3 62 53520 344.3 613 599 153.7
B 5 185 578085 4092.89 653 628 141.1
B 10 16 335852 2376.0 653 628 141.1
B 5 172 87233 613.84 653 628 141.1
C 9 38 634707 3530.89 656 650 179.6
C 1 16 259174 1439.65 656 650 179.6
C 13 3 241260 1339.89 656 650 179.6
D 2 249 725816 4066.7 633 605 178.3
D 15 142 617602 3459.88 633 605 178.3
D 8 160 456029 2553.84 633 605 178.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter